/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  OpenFlipper is distributed in the hope that it will be useful,           *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
 *  GNU Lesser General Public License for more details.                      *
 *                                                                           *
 *  You should have received a copy of the GNU LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision$                                                         *
 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/


#include "Core.hh"

#include "OpenFlipper/common/GlobalOptions.hh"

#include "OpenFlipper/BasePlugin/PluginFunctions.hh"

#include "OpenFlipper/widgets/loadWidget/loadWidget.hh"

#include <QFileDialog>
#include <QGroupBox>
#include <QBoxLayout>

/// Save Settings (slot is called from CoreWidget's File-Menu)
void Core::saveSettings(){

  // ========================================================================================
  // generate the saveSettings-Dialog
  // ========================================================================================

  QString complete_name;

  QFileDialog fileDialog( coreWidget_,
                          tr("Save Settings"),
                          OpenFlipperSettings().value("Core/CurrentDir").toString(),
                          tr("INI files (*.ini);;OBJ files (*.obj )") );

  fileDialog.setOption (QFileDialog::DontUseNativeDialog, true);
  fileDialog.setAcceptMode ( QFileDialog::AcceptSave );
  fileDialog.setFileMode ( QFileDialog::AnyFile );

  QGridLayout *layout = (QGridLayout*)fileDialog.layout();

  QGroupBox* optionsBox = new QGroupBox( &fileDialog ) ;
  optionsBox->setSizePolicy( QSizePolicy ( QSizePolicy::Expanding , QSizePolicy::Preferred ) );
  optionsBox->setTitle(tr("Options"));
  layout->addWidget( optionsBox, layout->rowCount() , 0 , 1,layout->columnCount() );

  QCheckBox *saveProgramSettings = new QCheckBox(optionsBox);
  saveProgramSettings->setText(tr("Save program settings"));
  saveProgramSettings->setToolTip(tr("Save all current program settings to the file ( This will include view settings, colors,...) "));
  saveProgramSettings->setCheckState( Qt::Unchecked );

  QCheckBox *savePluginSettings = new QCheckBox(optionsBox);
  savePluginSettings->setText(tr("Save per Plugin Settings"));
  savePluginSettings->setToolTip(tr("Plugins should add their current global settings to the file"));
  savePluginSettings->setCheckState( Qt::Checked );

  QCheckBox *saveObjectInfo = new QCheckBox(optionsBox);
  saveObjectInfo->setText(tr("Save open object information to the file"));
  saveObjectInfo->setToolTip(tr("Save all open Objects and add them to the settings file ( they will be loaded if opening the settings file"));
  saveObjectInfo->setCheckState( Qt::Checked );

  QCheckBox *saveAllBox = new QCheckBox(optionsBox);
  saveAllBox->setText(tr("Save everything to same folder"));
  saveAllBox->setToolTip(tr("Save all open files to the same folder as the ini file"));
  saveAllBox->setCheckState( Qt::Checked );

  QCheckBox *askOverwrite = new QCheckBox(optionsBox);
  askOverwrite->setText(tr("Ask before overwriting files"));
  askOverwrite->setToolTip(tr("If a file exists you will get asked what to do"));
  askOverwrite->setCheckState( Qt::Checked );

  QCheckBox *targetOnly = new QCheckBox(optionsBox);
  targetOnly->setText(tr("Save only target objects"));
  targetOnly->setToolTip(tr("Only objects with target flag will be handled"));
  targetOnly->setCheckState( Qt::Unchecked );

  QBoxLayout* frameLayout = new QBoxLayout(QBoxLayout::TopToBottom,optionsBox);
  frameLayout->addWidget( saveProgramSettings , 0 , 0);
  frameLayout->addWidget( savePluginSettings  , 1 , 0);
  frameLayout->addWidget( saveObjectInfo      , 2 , 0);
  frameLayout->addWidget( saveAllBox          , 3 , 0);
  frameLayout->addWidget( askOverwrite        , 4 , 0);
  frameLayout->addWidget( targetOnly          , 5 , 0);
  frameLayout->addStretch();

  fileDialog.resize(550 ,600);

  // ========================================================================================
  // show the saveSettings-Dialog and get the target file
  // ========================================================================================
  QStringList fileNames;
  if (fileDialog.exec()) {
    fileNames = fileDialog.selectedFiles();
  } else {
    return;
  }

  if ( fileNames.size() > 1 ) {
    std::cerr << "Too many save filenames selected" << std::endl;
    return;
  }

  complete_name = fileNames[0];

  //check the extension if its a known one
  if ( !complete_name.endsWith(".ini", Qt::CaseInsensitive) && !complete_name.endsWith(".obj", Qt::CaseInsensitive) ){

    // If its unknown, get the type from the currently selected filter and add this extension to the filename
    if ( fileDialog.selectedNameFilter().contains(tr("INI files (*.ini)")) )
      complete_name += ".ini";
    else
      complete_name += ".obj";

  }

  // Get the chosen directory and remember it.
  QString newpath = complete_name.section(OpenFlipper::Options::dirSeparator(),0,-2);
  OpenFlipperSettings().setValue("Core/CurrentDir", newpath);

  // ========================================================================================
  // update status information
  // ========================================================================================
  OpenFlipper::Options::savingSettings(true);

  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( tr("Saving Settings to ") + complete_name + " ...");
    coreWidget_->setStatus(ApplicationStatus::BLOCKED );
  }

  // ========================================================================================
  // Save the objects itself
  // ========================================================================================
  // Depending on the checkbox iterate over all objects or only the selected ones.

  if ( saveObjectInfo->isChecked() ) {

    PluginFunctions::IteratorRestriction restriction;
    if ( targetOnly->isChecked() )
      restriction = PluginFunctions::TARGET_OBJECTS;
    else
      restriction = PluginFunctions::ALL_OBJECTS;

    //Iterate over opened objects and save them
    for ( PluginFunctions::ObjectIterator o_it(restriction);
                                          o_it != PluginFunctions::objectsEnd(); ++o_it)
    {
      QString filename;

      if ( saveAllBox->isChecked() )
      {
        // Use path of settings file for all objects
        filename = newpath + OpenFlipper::Options::dirSeparator() + o_it->name();
      }
      else
      {
        // Use objects own path if it has one. Otherwise also use path of settings file
        filename = o_it->path() + OpenFlipper::Options::dirSeparator() + o_it->name();

        // handle the case that the object was created in current session and not loaded from disk
        if (o_it->path() == ".") {
          filename = newpath + OpenFlipper::Options::dirSeparator() + o_it->name();
          std::cerr << "newpath : " << newpath.toStdString() << std::endl;
          std::cerr << "name  : " << o_it->name().toStdString() << std::endl;
        }
      }

      // enforce that all files end with obj extension if its an obj-settings file
      if ( complete_name.endsWith("obj") )
      {
        if (!filename.endsWith("obj"))
        {
          // remove old extension
          int pos = filename.lastIndexOf(".");
          filename.remove(pos+1, filename.length() - pos);
          // add obj extension
          filename += "obj";
        }
      }

      // decide whether to use saveObject or saveObjectTo
      if ( !QFile(filename).exists() || !askOverwrite->isChecked() )
        saveObject( o_it->id(), filename);
      else
        saveObjectTo(o_it->id(), filename);

    }
  }


  // ========================================================================================
  // Finally save all Settings
  // ========================================================================================
  if ( complete_name.endsWith("ini") ) {

    // write to ini
    writeIniFile( complete_name,
                  saveAllBox->isChecked(),
                  targetOnly->isChecked(),
                  saveProgramSettings->isChecked(),
                  savePluginSettings->isChecked(),
                  saveObjectInfo->isChecked());

  } else if ( complete_name.endsWith("obj") ) {

    //write to obj
    writeObjFile(complete_name, saveAllBox->isChecked(), targetOnly->isChecked() );

  }

  // update status
  OpenFlipper::Options::savingSettings(false);

  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( tr("Saving Settings to ") + complete_name + tr(" ... Done"), 4000);
    coreWidget_->setStatus(ApplicationStatus::READY );
  }

  //add to recent files
  if ( OpenFlipper::Options::gui() )
    coreWidget_->addRecent( complete_name, DATA_UNKNOWN );

}